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El Toqui property, Cerro Estatuas Ñirehuao district, Coyhaique Province (Coihaique Province), Aisén del General Carlos Ibáñez del Campo Region, Chile

Stratiform gold-rich massive sulphide replacement skarn mantos, hosted in limestones, and lesser veins, hosted in dacitic volcanic rocks. Past production and reserves amount to about 10 million tons of ore grading at 8% Zn, 0.6% Cu, 1.5% Pb, 1.5 grams/ton Au and 50 grams/ton Ag, on average.

The deposit was discovered in the early 1970s. The Metallgesellschaft AG owned the property for a number of years and then sold it to a Chilean entrepreneur, who started mining it in 1984. It was subsequently purchased by Lac Minerals. In 1994, Barrick Gold Corporation acquired Lac Minerals which included El Toqui. Breakwater Resources Ltd. purchased Toqui in August 1997.

The property includes the stratiform Aserradero, Concordia, Doña Rosa-Mallin Sur, Estatuas, Mallin-Mónica and San Antonio orebodies, and the Antolin and Zúñiga discordant vein deposits.

Mineral List

Mineral list contains entries from the region specified including sub-localities
Albite
Amphibole Supergroup
Arsenopyrite
Bismuth
Calcite
Chalcopyrite
'Chlorite Group'
Epidote
Galena
'Garnet'
Gold
var: Electrum
Hessite
Ilvaite
'K Feldspar'
Magnetite
Maldonite
Muscovite
var: Sericite

Pyrite
'Pyroxene Group'
Pyrrhotite
Quartz
Sphalerite
var: Marmatite
Tetrahedrite


25 entries listed. 18 valid minerals.

Localities in this Region

Chile

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References

Wellmer, F.W., Reeve, E.J., Wentzlau, E. and Westenberger, H. (1983) Geology and ore deposits of the Toqui District, Aysen, Chile. Economic Geology 78:6 pp. 1119-1143.

Mining Annual Review (1985) 56.

Ruiz Fuller, C., and Peebles, F. (1988) Yacimientos metalíferos de Chile. Fondecyt (Santiago de Chile).

Townley, B.K., and Godwin, C.I. (2001) Isotope characterization of lead in galena from ore deposits of the Aysén Region, southern Chile. Mineralium Deposita 36, 45-57.

Maksaev, V., Townley, B., Palacios, C., and Camus, F. (2007) Metallic ore deposits, in Moreno, T., and Gibbons, W. (editors) The Geology of Chile. The Geological Society (London), p. 414.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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